Backlight and display apparatus

A backlight comprising:

• a light guide plate;
• an optical member disposed to face the light guide plate, the optical member having a sheet-like shape;
• and
• a frame configured to enclose the light guide plate and the optical member, wherein
• a first hole provided to pass through the frame in a direction in which the light guide plate and the optical member face each other,
• a cutout or a hole aligned to a position of the first hole of the frame is provided in each of the light guide plate and the optical member,
• the backlight further comprises an adhesive agent, the adhesive agent being disposed in the first hole of the frame and in a space which communicates with the first hole and includes the cutout or the hole of each of the light guide plate and the optical member, the adhesive agent being configured to fix the light guide plate and the optical member, and
• the optical member includes a first optical sheet and a second optical sheet, a distance between the second optical sheet and the light guide plate being smaller than a distance between the first optical sheet and the light guide plate, and
• a projection length of an end portion of the first optical sheet from an end portion of the light guide plate is larger than a projection length of an end portion of the second optical sheet from the end portion of the light guide plate.